Safety is a major goal of the National Intelligent Transportation System (ITS) Program.To promote safety, the Federal Highway Administration (FHWA) funded several field operational tests to evaluate technologies designed to decrease transportation related risk. Mayday services were among these technologies. Mayday services allow motorists to report
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This report documents the results of a Federal Highway ADministration (FHWA) study of the agency's Highqay Performance Monitoring System (HPMS). The purpose of this study was to assist FHWA in conducting a comprehensive review of the HPMS, designed to result in recommendations as to the future form and direction that this major FHWA data system sho
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In recent years, significant developments have occurred in concrete testing and in establishing test procedures for nondestructive testing (NDT). There continues to be an ever-increasing demand by the traveling public to open pavements and structures earlier to traffic. Because of this shortened construction schedule, the inspection force needs to
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This report has been prepared by Mitretek systems for the Intelligent Transportation Systems (ITS) Joint Program Office of the Federal Highway Administration (FHWA). The report documents the first phase of an investigation of how to “mainstream”, or integrate, ITS planning into general transportation planning at the state, regional and local levels
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This report describes the development of operational surveillance data processing algorithms and software for application to urban freeway systems, conforming to a framework in which data processing is performed in stages: sensor malfunction detection, data repair, calibration, qualitative modeling of traffic conditions, and, finally, discriminatio
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Integration of intelligent transportation systems (ITS) within a metropolitan area is crucial for effective deployment. The Early Deployment Planning (EDP) Process is one tool that allows transportation officials to plan for and implement ITS technologies as part of an integrated transportation system. Congestion management systems (CMS), which are
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This document is the Final Evaluation Report for the Genesis Advanced Traveler Information System (ATIS) Field Operational Test (FOT). Genesis was one of the early projects sponsored by the US Department of Transportation (USDOT) Intelligent Transportation System (ITS) FOT program. The project originated from the formulation of the Minnesota Guides
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This report describes the development of operational surveillance data processing algorithms and software for application to urban freeway systems, conforming to a framework in which data processing is performed in stages: sensor malfunction detection, data repair, calibration, qualitative modeling of traffic conditions, and, finally, discriminatio
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The objectives of this project were to examine the costs and quality of safety data and to identify improvement strategies. The project's scope was narrowed to three key sources: the crash report, roadway inventories, and medical records. The primary focus was on crash reporting. Within the medical source, the focus was upon data regarding driver c
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This design pamphlet details suggested procedures to determine the design resilient modulus of different pavement materials in support of the 1993 AASHTO Guide for the Design of Pavement Structures. These suggested procedures do consider the seasonal variation of resilient moduli to estimate structural layer coefficients for flexible pavement desig
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This handbook provides instructor notes for a course designed to present roadway and roadside features that can prevent the occurrence of a traffic accident, and reduce the severity of an accident should one occur. It presents current information on crash worthy longitudinal barriers, crash cushions, bridge rails, transitions, end terminals, sign p
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Oregon enjoys a national reputation for progressive public policy, good government, and an open and inclusive political process. During research for these case studies, observers often cited the Oregon Department of Transportation (ODOT) as one of the best examples of transportation agencies that involve the public in their project planning and pro
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Sacramento, California's State capital, is not a tourist mecca in the same way San Francisco and Los Angeles are. Yet, in many of its physical and cultural characteristics, it's very much "California": people are spread out, distances are great, and everyone has a car. In the face of growth projections that will further burden a highway system unab
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Metroplan - The metropolitan planning organization (MPO) for central Arkansas (Little Rock / North Little Rock Metropolitan Statistical Area) - developed a robust public involvement process to support its long-range planning process, known as Metro 2020. This process has carried over to implementation through transportation improvement program (TIP
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With impetus from the National Quality Initiative (NQI) and Demonstration Project 89 (DP-89) - Quality Management, members of the highway community have undertaken a concerted effort to improve the design, construction, and maintenance of the nation's highway system. This report reviews significant national-level activities since 1992, when NQI beg
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This design pamphlet details the procedures to backcalculate pavement layer moduli in support of the 1993 American Association of State Highway and Transportation Officials (AASHTO) Guide for the Design of Pavement Structures. The recommended procedure presented in this pamphlet was based on a combination of ASTM D5858 and the procedure developed a
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This design pamphlet details suggested procedures to determine the design resilient modulus of subgrade soils in support of the 1993 American Association of State Highway and Transportation Officials (AASHTO) Guide for the Design of Pavement Structures. The design pamphlet includes recommendations for the subsurface characterization and exploration
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This design pamphlet details suggested procedures to determine the design resilient modulus of different pavement materials in support of the 1993 American Association of State Highway and Transportation Officials (AASHTO) Guide for the Design of Pavement Structures. These suggested procedures do consider the seasonal variation of resilient moduli
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